Dean, John J.
Effective speaking here's how / John J. Dean
Boolarong Publications, 1987
 Buku Teks
Sprague, Jo
The speaker's handbook
Wadsworth/Cengage Learning, 2013
 Buku Teks
Gipson, James H.
Winning the investment game a guide for all seasons / James M. Gibson
McGraw-Hill Book, 1984
 Buku Teks
Sprague, Jo
Speaker's handbook
Wadsworth and Cengage Learning, 2013
 Buku Referensi
Anderson, Chris
TED talks: the official TED guide to public speaking
Headline Publishing Group, 2016
 Buku Teks